Communication apparatus having a non-ringing call receiving mode

Details Communication apparatus having a non-ringing call receiving mode Communication apparatus having a non-ringing call receiving mode

1996-08-20

1999-06-01

Wolinsky, Scott

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379 9309, 379382, 379413, 379418, 379442, H04M 100

Patent

active

059094885

ABSTRACT:
A communication apparatus has a power saving stand-by mode for reducing power consumption during stand-by and a non-ringing call receiving mode for communication without ringing an attached telephone set at the arrival of a call. In the power saving stand-by mode, an operation state of a relay for attaining the non-ringing call receiving mode is held by a stand-by power supply to render both modes compatible to each other.

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